Note: The candidates are required to attempt any four
questions from section B and any two questions from section C. Section A is
compulsory shall contain only one question consisting of 10 short answer type
questions carrying 02 marks each. Assume any missing data suitably. Steam table
is allowed.

Section –A

1.

a.What is the effect of air fuel ratio in C.I Engine

b.What are the disadvantages of LPG fuel

c.Draw with neat sketch Pressure – Time Diagram of
combustion for SI Engine.

d.What is Sonex system for emission control

e.Write any one reason for Low CO and Hydrocarbon
emission in S.I. Engine.

f.How auto – ignition is responsible for knocking
in C.I engines.

g.What is meant by SMOKE Emission

h.Draw with neat sketch flame ionization detector

i.What is the function of or sat apparatus

j.What is catalytic converter

Section
–B

2.Brief about emission characteristics of methanol
and gasoline blend used in C.I. Engines.

3.Explain the performance and emission
characteristic of engine running on CNG.

4.What is the problem experienced while using
vegetable oil in diesel engine.

5.Brief about Hydrogen fuel and its
characteristics.

6.Explain the performance characteristics and
limitations of the bio diesel fuel.

Section
–C

7.Describe the phenomenon of detonation or
knocking in C.I. engines. How can it be controlled?